Assuming the earth as a sphere of uniform density, the acceleration due to gravity half way towards the centre of the earth will be if it weighed 250N on the surface?
A
0.25g
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B
0.50g
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C
0.125g
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D
0.75g
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Solution
The correct option is C0.125g
Suppose g1ga be the acceleration due to gravity on earth's surface and at a depth d from surface respectively. Also suppose w and wd be weight of body on earth's surface at a depth d.